Köhn, Daniel: The structure of reactive grain-boundaries under stress containing confined fluids
Gutenberg Open


Titelanzeige

Personen: Köhn, Daniel (Autor) 
Malthe-Sorenssen, A. (Autor) 
Passchier, Cornelis Willem (Autor) 
  
Titel: The structure of reactive grain-boundaries under stress containing confined fluids
  
Quelle: Chemical geology. Bd. 230. H. 3/4. S. 207 - 219
Erscheinungsjahr:    2006
ISBN / ISSN: 0009-2541
URL der Originalveröffentlichung doi:10.1016/j.chemgeo.2006.02.026
  
Dokumentart:
Zeitschriftenaufsatz Zeitschriftenaufsatz
Sprache: Englisch
Open Access:
Personen der Universität:    Köhn, Daniel  In UnivIS suchen  ; Passchier, Cornelis Willem  In UnivIS suchen 
Einrichtung: Institut für Geowissenschaften
DDC-Sachgruppe:    Geowissenschaften
DFG-Fachgebiet: Geologie und Paläontologie
ID: 16338  Universitätsbibliothek Mainz
Hinweis:
Informationen zu den Nutzungsrechten unserer Inhalte Informationen zu den Nutzungsrechten unserer Inhalte
Abstract: We present numerical experiments on structure development in grain-boundaries during dissolution–precipitation creep. Two solids that are represented by an elastic spring configuration are pressed together with a compressible fluid in the grain-boundary. The solid can dissolve or precipitate depending on elastic and surface energy as well as fluid pressure and concentration of dissolved material in the fluid. We perform a number of numerical experiments with different starting configurations that represent a large-scale island-channel interface with solid–solid contacts across the islands, a rough grain-boundary interface with a fluid along the whole interface and a smooth thin-film interface. The simulations suggest that the solid–solid islands become unstable by necking and anti-cracking so that the island-channel interface will develop into a grain-boundary interface. The rough interface of the grain-boundary will coarsen with time so that in the extreme case a smooth thin-film interface will emerge. However the thin-film interface is also not necessarily stable but may develop into a rough grain-boundary where the roughness is initiated by heterogeneous dissolution of the solid. Our numerical experiments suggest that interface structures during dissolution–precipitation creep are transient and that the dominance of one interface structure depends on material properties, the displacement rate, purity of the reacting solid and the scale of observation.
   
  
Verfügbarkeit prüfen:    Rechercheportal Mainz: 0009-2541
  KatalogPortal Mainz (inklusive FB 06): 0009-2541
  Elektronische Zeitschriftenbibliothek (EZB): 0009-2541
 


Im   
Impressum